無法在java中

Question

創建內部類對象我無法在Java創建內部類對象：

package OOO; 

class Car{ 
    class Engine{ 

     void display() { 
      System.out.println("this is inner diaplay() method"); 
     } 

    } 
} 

public class Sample8InnerClassCar { 
    Car c = new Car(); 
    Car.Engine e = c.new Car.Engine(); 
} 

它扔我一個錯誤：無法分配成員類型Car.Engine。有人能幫我理解更多嗎？

Answer 1

正確的語法是：

Car.Engine e = c.new Engine(); 

完整的代碼片段：

package OOO; 

class Car { 
    class Engine { 

     void display() { 
      System.out.println("this is inner diaplay() method"); 
     } 
    } 
} 

public class Sample8InnerClassCar { 

    Car c = new Car(); 
    Car.Engine e = c.new Engine(); 
}